Locking slider for slide fasteners



April 14, 1942. F. ULRICH n Y LOCKING SLIDER FOR SLIDE FASTENERS.

Filed Aug. l, 1940 `mvENTo FREDERICK LULRICH ATTORNEYS `Ydrawing,in which: y Y Y, j Y Y, Y Fig. V1 is affront elevation of a slider embody'- ing featuresV of my invention;

from the fastener;

Patented Apr. 14, 1942 www YFrederick Ulrich, Bayonne, N. `J., assignor to' .Y Conmar ProductsCorporation, Bayonne, N. J.,

ajcorporaticn of New Jersey- Y A This yinvention relatesA to slide,V fastenersfand ymore. particularly to" locking slidersvtherefor. 1 The primary object ofjniy invention is to vigenerally improve lockingsliders fori slide fasteners.

"The slider Ilcoxnprisesa front wall'2ii a *rear 'wa11v22 joined at` a neckf 2l. Injthefpres- `ent' casethe slideris formed of heavy ljgfauge s sheetj metal vand the Vwalls are indented to- A more lparticular object Vis1to provide1alocking `5 Y wardfone another atgrthe' neck and are y'there slider having one or'more locking projections, WeldedV 'to secure the samei'gtog'etherf 4The each of whichis strong, sturdy, andvcapable of fxontlg wall y201sV preferably provided with. a withstanding rough handling and abuse.'4 VAn- "bail'jor 'lug "25; lwhich carries a handle or soother object is to provide a loclring projection so called` pull k2.8.A The side edges ofthe slider shaped that when thetapes `are pulled apart the v jare'nangedas is'indieated'atfl and. -These elements are moved more strongly thereagairist,

1 and against the strongest part of the locking v projection.V Still another object is to Vprovide a] locking Vslider which'm'ay be ,made at substantially no extra costcompared to a non-locking in the die'or tool'for making the slider;

flanged edges may,ffifjidesired,ijbe coined to a.

y slider and with only a., slight negligible change Ythinner section ,than the mainbodyof the slider as is indicated at 34 in Figgil.` Theslider-as so fardescribed in substantially 1 the' sameasthat Y described in m'y Patent'2r,07&,'!45 issued Ap'il 27,

1937, andentitled Slider fbluY Slide fasteners and v- Vmethod for making thesame."

l Tothe accomplishment of the foregoing, and

such "other objects vas may .hereinafter appear, my invention consists `in the lockingsliderelements and their `relation one 'to the' other as hereinafter are more particularly described in i the specification and sought to be defined inA the j claims.' 'I'he'specicationmis vaccompanied by al Fig. 2 is a 'side elevation of the same removed Fig. 3 is an inside view of the front wall ofthe slider; V

Fig. 4 is an inside view of the back wall of thej slider;

' Fig. 5 is a fragmentary section taken in the plane of the line 5 5 of Fig. 4;

Fig. 6 is a fragmentary section taken inthe plane of the line 6 6 of Fig. 5;

Fig. 7 is a perspective view of the upper corner of one-half of the slider;

Fig. 8 is a schematic section taken in elevation through a die for forming the slider;

closed relation; and

Fig. 10 is a perspective view ofa fragment of l against Opening. Y .Y .Y I the die. y, r Y 4 shows the back wall ofthe slider, looking Referring to the drawing, 'and `more particufrom 'the inside, and this ligure Methuen with larly to Figs. 1 and 2, the slider generally designated I2 cooperates with a slide fastener which ini-1yv be ofv conventional character, the` latter v the lilperA Y However .the aforesaidslider-\is',here improved bythe provision of Alocking:.r'nean's.v` One o'r more locking projections are provided,- preferably at are twogsuh projections.; ina'slrea` opgang .42. slider A`has four uppercornersand ya'jlock-y f Zing projection inay be PIOVded/Jatanyfgne 'of'.`

the'sanie. Y It is thusl possibleto o,I sig'lelprojection, twlo projections,Y three projections,r or four projections. When two projections are used both .on the back wall of the slider, but I 'prefer to locate them directly opposite one another, that is, with one on the front wall and the other on the back wall ofthe. slider. v Suchen arrangement is here aeferrmgto'rig. 1.1i wm be seen'that any auf` Y tempt to open .the slider by separating or pulling the tapes Il apart simply serves 1to wedge the outer Vor jaw endsV of the fastener elements against the` projections, `as is iriilicatedV by the relation 4of Ythe elements Yand 5D to the projecf tion '40 in Fig. 1. This prevents downward move-- ment of the slider, and so lock'sthe fastener Fig. 7 clearly shows lho'w, inaccordance with my"vk inside corners fof -th'e slider. In'the 1 specific example illustrated in the drawingf'there illustrated, as is 'best shown atjll,

ange 32, while lthe outer side of thevlocking projection is joined'lntegrally with the adjacent wall 22. 'Ihus the'proieetion lzissupportedand 1 strengthened vby its integrar connection with imY mutually perpendicular walls of the slider.` The same applies to the projection 4I onthe front comprising tapes I4 havingV beaded or corded 50 edges I6 on which are clamped a series of interlockable fastener elements i8. VMovement of the slider in upward direction vcauses the elements t0 Vinterlock andmovement Yof theV slider in down-` ward direction disengages the elements. 55..

fnu, it beine-mmm joined to muse' nina@ wall 2l, as is shown in Ill. 3. v@Mc'axreoverg it will be observed from the drawing that the'proiection l diverses toa relatively broad where it `joins the wall and theffianze. v'I'hisfeature willvbe Y clear fromiconsideratiomrnot only of 7, but

also Fiss.'5 and 6. Thus the'projection is strongest Lai'. itsbsse andjouter end;v 4 This isfan sdvsn-gA ,le 2,279,767 .Y

"I claim: y 'e i e vLA locking slider for s slide fastener, said slider comprlsingfrpnt and back walls connected by :neck portion. flanges formed integrally with said walls; and one or moresolidlock'ins projectionsY formed integrally with `said walls and tsgeous srrsnsem'ent because" the projections are".

put under lood only when the, tapes have been'l pulled spart in an effort .to.tear"rthe fastener open. and this moves kthe fastener elements ontr kingproiections wardly until theyenssethel at their stronsest;point.' Another advantage of fen'instoFigsJ'and i y the slider is formed between'dies llisnd il' inta 'niennfectixrinsloperstion`s.ll g i foregoingv detsiledjg;description"1thereof.1A It will the.u -V coxistriiction istheesseof'manufachxrinz tlieaunsne"lr 9 it explainedthnt l 251kiockinsl'slider for a. slide fastener, said i slider, comprising front and back wslls connected;l

n bya neckfpotin',flangesl formed integrally with' manner schematically shown in Flgsianndin Y C Efull thickness Vlblsnskjkll, is between dies l sndlis 'compressed bythediesto formtheiflens'es 3I.}To' form thefdesiifed.;lockingprolectioniit'is 1 merely nements-:t0 mmh-' mnerri'oithe die'. as n; mdisteqstgss in reggia, 4miglio.; is

` readily done as. for. exemple.Y byjgrinding.` Y; When flanges,v ithe outer end If said projection being `r ""joinedifintesrallywith theadjacent ilsnge Y and 1tslofr-sldebe1hi lJoined -integrallyvwitn the adjacent wall,V whereby said projection is supported and' strengthened by its integralconnecj tion withtwo relatively transversev walls ofthe sliderf'scid projection sloping f from flange to wall to permit passage of the slide fastener during-.the normal operaLtionof `:Amici slide fastener.

catch?I projection" being located at i an fslidr, Seid prolectlonflbeins -s' located 1 Si ,t9 persaid i danses, 'each' projection rbeingllocste'd Aist lsu "'-tion,;as;well 'asthemethod of`lnenufmctni'ins` Vmy improved lockint slider apparent from the upprcorneij, o f/Jnthe 'slider,`l'its zoute'rfend being" VvJoinedintegrally .with the 'adjacent riesigeV am 

